1 /* 2 * Renesas R-Car SRU/SCU/SSIU/SSI support 3 * 4 * Copyright (C) 2013 Renesas Solutions Corp. 5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 * 7 * Based on fsi.c 8 * Kuninori Morimoto <morimoto.kuninori@renesas.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 /* 16 * Renesas R-Car sound device structure 17 * 18 * Gen1 19 * 20 * SRU : Sound Routing Unit 21 * - SRC : Sampling Rate Converter 22 * - CMD 23 * - CTU : Channel Count Conversion Unit 24 * - MIX : Mixer 25 * - DVC : Digital Volume and Mute Function 26 * - SSI : Serial Sound Interface 27 * 28 * Gen2 29 * 30 * SCU : Sampling Rate Converter Unit 31 * - SRC : Sampling Rate Converter 32 * - CMD 33 * - CTU : Channel Count Conversion Unit 34 * - MIX : Mixer 35 * - DVC : Digital Volume and Mute Function 36 * SSIU : Serial Sound Interface Unit 37 * - SSI : Serial Sound Interface 38 */ 39 40 /* 41 * driver data Image 42 * 43 * rsnd_priv 44 * | 45 * | ** this depends on Gen1/Gen2 46 * | 47 * +- gen 48 * | 49 * | ** these depend on data path 50 * | ** gen and platform data control it 51 * | 52 * +- rdai[0] 53 * | | sru ssiu ssi 54 * | +- playback -> [mod] -> [mod] -> [mod] -> ... 55 * | | 56 * | | sru ssiu ssi 57 * | +- capture -> [mod] -> [mod] -> [mod] -> ... 58 * | 59 * +- rdai[1] 60 * | | sru ssiu ssi 61 * | +- playback -> [mod] -> [mod] -> [mod] -> ... 62 * | | 63 * | | sru ssiu ssi 64 * | +- capture -> [mod] -> [mod] -> [mod] -> ... 65 * ... 66 * | 67 * | ** these control ssi 68 * | 69 * +- ssi 70 * | | 71 * | +- ssi[0] 72 * | +- ssi[1] 73 * | +- ssi[2] 74 * | ... 75 * | 76 * | ** these control src 77 * | 78 * +- src 79 * | 80 * +- src[0] 81 * +- src[1] 82 * +- src[2] 83 * ... 84 * 85 * 86 * for_each_rsnd_dai(xx, priv, xx) 87 * rdai[0] => rdai[1] => rdai[2] => ... 88 * 89 * for_each_rsnd_mod(xx, rdai, xx) 90 * [mod] => [mod] => [mod] => ... 91 * 92 * rsnd_dai_call(xxx, fn ) 93 * [mod]->fn() -> [mod]->fn() -> [mod]->fn()... 94 * 95 */ 96 #include <linux/pm_runtime.h> 97 #include "rsnd.h" 98 99 #define RSND_RATES SNDRV_PCM_RATE_8000_96000 100 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) 101 102 static const struct of_device_id rsnd_of_match[] = { 103 { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 }, 104 { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 }, 105 { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN2 }, /* gen2 compatible */ 106 {}, 107 }; 108 MODULE_DEVICE_TABLE(of, rsnd_of_match); 109 110 /* 111 * rsnd_mod functions 112 */ 113 #ifdef DEBUG 114 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type) 115 { 116 if (mod->type != type) { 117 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 118 struct device *dev = rsnd_priv_to_dev(priv); 119 120 dev_warn(dev, "%s[%d] is not your expected module\n", 121 rsnd_mod_name(mod), rsnd_mod_id(mod)); 122 } 123 } 124 #endif 125 126 char *rsnd_mod_name(struct rsnd_mod *mod) 127 { 128 if (!mod || !mod->ops) 129 return "unknown"; 130 131 return mod->ops->name; 132 } 133 134 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io, 135 struct rsnd_mod *mod) 136 { 137 if (!mod || !mod->ops || !mod->ops->dma_req) 138 return NULL; 139 140 return mod->ops->dma_req(io, mod); 141 } 142 143 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io, 144 struct rsnd_mod *mod, 145 enum rsnd_mod_type type) 146 { 147 return &mod->status; 148 } 149 150 int rsnd_mod_init(struct rsnd_priv *priv, 151 struct rsnd_mod *mod, 152 struct rsnd_mod_ops *ops, 153 struct clk *clk, 154 u32* (*get_status)(struct rsnd_dai_stream *io, 155 struct rsnd_mod *mod, 156 enum rsnd_mod_type type), 157 enum rsnd_mod_type type, 158 int id) 159 { 160 int ret = clk_prepare(clk); 161 162 if (ret) 163 return ret; 164 165 mod->id = id; 166 mod->ops = ops; 167 mod->type = type; 168 mod->clk = clk; 169 mod->priv = priv; 170 mod->get_status = get_status; 171 172 return ret; 173 } 174 175 void rsnd_mod_quit(struct rsnd_mod *mod) 176 { 177 if (mod->clk) 178 clk_unprepare(mod->clk); 179 mod->clk = NULL; 180 } 181 182 void rsnd_mod_interrupt(struct rsnd_mod *mod, 183 void (*callback)(struct rsnd_mod *mod, 184 struct rsnd_dai_stream *io)) 185 { 186 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 187 struct rsnd_dai_stream *io; 188 struct rsnd_dai *rdai; 189 int i; 190 191 for_each_rsnd_dai(rdai, priv, i) { 192 io = &rdai->playback; 193 if (mod == io->mod[mod->type]) 194 callback(mod, io); 195 196 io = &rdai->capture; 197 if (mod == io->mod[mod->type]) 198 callback(mod, io); 199 } 200 } 201 202 int rsnd_io_is_working(struct rsnd_dai_stream *io) 203 { 204 /* see rsnd_dai_stream_init/quit() */ 205 return !!io->substream; 206 } 207 208 void rsnd_set_slot(struct rsnd_dai *rdai, 209 int slots, int num) 210 { 211 rdai->slots = slots; 212 rdai->slots_num = num; 213 } 214 215 int rsnd_get_slot(struct rsnd_dai_stream *io) 216 { 217 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 218 219 return rdai->slots; 220 } 221 222 int rsnd_get_slot_num(struct rsnd_dai_stream *io) 223 { 224 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 225 226 return rdai->slots_num; 227 } 228 229 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io) 230 { 231 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 232 233 return runtime->channels; 234 } 235 236 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io) 237 { 238 int chan = rsnd_runtime_channel_original(io); 239 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io); 240 241 if (ctu_mod) { 242 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod); 243 244 if (converted_chan) 245 return converted_chan; 246 } 247 248 return chan; 249 } 250 251 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io) 252 { 253 int chan = rsnd_io_is_play(io) ? 254 rsnd_runtime_channel_after_ctu(io) : 255 rsnd_runtime_channel_original(io); 256 257 /* Use Multi SSI */ 258 if (rsnd_runtime_is_ssi_multi(io)) 259 chan /= rsnd_get_slot_num(io); 260 261 /* TDM Extend Mode needs 8ch */ 262 if (chan == 6) 263 chan = 8; 264 265 return chan; 266 } 267 268 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io) 269 { 270 int slots = rsnd_get_slot_num(io); 271 int chan = rsnd_io_is_play(io) ? 272 rsnd_runtime_channel_after_ctu(io) : 273 rsnd_runtime_channel_original(io); 274 275 return (chan >= 6) && (slots > 1); 276 } 277 278 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io) 279 { 280 return rsnd_runtime_channel_for_ssi(io) >= 6; 281 } 282 283 /* 284 * ADINR function 285 */ 286 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 287 { 288 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 289 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 290 struct device *dev = rsnd_priv_to_dev(priv); 291 292 switch (runtime->sample_bits) { 293 case 16: 294 return 8 << 16; 295 case 32: 296 return 0 << 16; 297 } 298 299 dev_warn(dev, "not supported sample bits\n"); 300 301 return 0; 302 } 303 304 /* 305 * DALIGN function 306 */ 307 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 308 { 309 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io); 310 struct rsnd_mod *target; 311 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 312 u32 val = 0x76543210; 313 u32 mask = ~0; 314 315 if (rsnd_io_is_play(io)) { 316 struct rsnd_mod *src = rsnd_io_to_mod_src(io); 317 318 target = src ? src : ssiu; 319 } else { 320 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io); 321 322 target = cmd ? cmd : ssiu; 323 } 324 325 mask <<= runtime->channels * 4; 326 val = val & mask; 327 328 switch (runtime->sample_bits) { 329 case 16: 330 val |= 0x67452301 & ~mask; 331 break; 332 case 32: 333 val |= 0x76543210 & ~mask; 334 break; 335 } 336 337 /* 338 * exchange channeles on SRC if possible, 339 * otherwise, R/L volume settings on DVC 340 * changes inverted channels 341 */ 342 if (mod == target) 343 return val; 344 else 345 return 0x76543210; 346 } 347 348 /* 349 * rsnd_dai functions 350 */ 351 struct rsnd_mod *rsnd_mod_next(int *iterator, 352 struct rsnd_dai_stream *io, 353 enum rsnd_mod_type *array, 354 int array_size) 355 { 356 struct rsnd_mod *mod; 357 enum rsnd_mod_type type; 358 int max = array ? array_size : RSND_MOD_MAX; 359 360 for (; *iterator < max; (*iterator)++) { 361 type = (array) ? array[*iterator] : *iterator; 362 mod = io->mod[type]; 363 if (!mod) 364 continue; 365 366 return mod; 367 } 368 369 return NULL; 370 } 371 372 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { 373 { 374 /* CAPTURE */ 375 RSND_MOD_AUDMAPP, 376 RSND_MOD_AUDMA, 377 RSND_MOD_DVC, 378 RSND_MOD_MIX, 379 RSND_MOD_CTU, 380 RSND_MOD_CMD, 381 RSND_MOD_SRC, 382 RSND_MOD_SSIU, 383 RSND_MOD_SSIM3, 384 RSND_MOD_SSIM2, 385 RSND_MOD_SSIM1, 386 RSND_MOD_SSIP, 387 RSND_MOD_SSI, 388 }, { 389 /* PLAYBACK */ 390 RSND_MOD_AUDMAPP, 391 RSND_MOD_AUDMA, 392 RSND_MOD_SSIM3, 393 RSND_MOD_SSIM2, 394 RSND_MOD_SSIM1, 395 RSND_MOD_SSIP, 396 RSND_MOD_SSI, 397 RSND_MOD_SSIU, 398 RSND_MOD_DVC, 399 RSND_MOD_MIX, 400 RSND_MOD_CTU, 401 RSND_MOD_CMD, 402 RSND_MOD_SRC, 403 }, 404 }; 405 406 static int rsnd_status_update(u32 *status, 407 int shift, int add, int timing) 408 { 409 u32 mask = 0xF << shift; 410 u8 val = (*status >> shift) & 0xF; 411 u8 next_val = (val + add) & 0xF; 412 int func_call = (val == timing); 413 414 if (next_val == 0xF) /* underflow case */ 415 func_call = 0; 416 else 417 *status = (*status & ~mask) + (next_val << shift); 418 419 return func_call; 420 } 421 422 #define rsnd_dai_call(fn, io, param...) \ 423 ({ \ 424 struct rsnd_priv *priv = rsnd_io_to_priv(io); \ 425 struct device *dev = rsnd_priv_to_dev(priv); \ 426 struct rsnd_mod *mod; \ 427 int is_play = rsnd_io_is_play(io); \ 428 int ret = 0, i; \ 429 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \ 430 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \ 431 int tmp = 0; \ 432 u32 *status = mod->get_status(io, mod, types[i]); \ 433 int func_call = rsnd_status_update(status, \ 434 __rsnd_mod_shift_##fn, \ 435 __rsnd_mod_add_##fn, \ 436 __rsnd_mod_call_##fn); \ 437 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \ 438 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \ 439 (func_call && (mod)->ops->fn) ? #fn : ""); \ 440 if (func_call && (mod)->ops->fn) \ 441 tmp = (mod)->ops->fn(mod, io, param); \ 442 if (tmp) \ 443 dev_err(dev, "%s[%d] : %s error %d\n", \ 444 rsnd_mod_name(mod), rsnd_mod_id(mod), \ 445 #fn, tmp); \ 446 ret |= tmp; \ 447 } \ 448 ret; \ 449 }) 450 451 int rsnd_dai_connect(struct rsnd_mod *mod, 452 struct rsnd_dai_stream *io, 453 enum rsnd_mod_type type) 454 { 455 struct rsnd_priv *priv; 456 struct device *dev; 457 458 if (!mod) 459 return -EIO; 460 461 if (io->mod[type] == mod) 462 return 0; 463 464 if (io->mod[type]) 465 return -EINVAL; 466 467 priv = rsnd_mod_to_priv(mod); 468 dev = rsnd_priv_to_dev(priv); 469 470 io->mod[type] = mod; 471 472 dev_dbg(dev, "%s[%d] is connected to io (%s)\n", 473 rsnd_mod_name(mod), rsnd_mod_id(mod), 474 rsnd_io_is_play(io) ? "Playback" : "Capture"); 475 476 return 0; 477 } 478 479 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 480 struct rsnd_dai_stream *io, 481 enum rsnd_mod_type type) 482 { 483 io->mod[type] = NULL; 484 } 485 486 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 487 { 488 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 489 return NULL; 490 491 return priv->rdai + id; 492 } 493 494 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 495 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 496 { 497 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 498 499 return rsnd_rdai_get(priv, dai->id); 500 } 501 502 /* 503 * rsnd_soc_dai functions 504 */ 505 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) 506 { 507 struct snd_pcm_substream *substream = io->substream; 508 struct snd_pcm_runtime *runtime = substream->runtime; 509 int pos = io->byte_pos + additional; 510 511 pos %= (runtime->periods * io->byte_per_period); 512 513 return pos; 514 } 515 516 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) 517 { 518 io->byte_pos += byte; 519 520 if (io->byte_pos >= io->next_period_byte) { 521 struct snd_pcm_substream *substream = io->substream; 522 struct snd_pcm_runtime *runtime = substream->runtime; 523 524 io->period_pos++; 525 io->next_period_byte += io->byte_per_period; 526 527 if (io->period_pos >= runtime->periods) { 528 io->byte_pos = 0; 529 io->period_pos = 0; 530 io->next_period_byte = io->byte_per_period; 531 } 532 533 return true; 534 } 535 536 return false; 537 } 538 539 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) 540 { 541 struct snd_pcm_substream *substream = io->substream; 542 543 /* 544 * this function should be called... 545 * 546 * - if rsnd_dai_pointer_update() returns true 547 * - without spin lock 548 */ 549 550 snd_pcm_period_elapsed(substream); 551 } 552 553 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 554 struct snd_pcm_substream *substream) 555 { 556 struct snd_pcm_runtime *runtime = substream->runtime; 557 558 io->substream = substream; 559 io->byte_pos = 0; 560 io->period_pos = 0; 561 io->byte_per_period = runtime->period_size * 562 runtime->channels * 563 samples_to_bytes(runtime, 1); 564 io->next_period_byte = io->byte_per_period; 565 } 566 567 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 568 { 569 io->substream = NULL; 570 } 571 572 static 573 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 574 { 575 struct snd_soc_pcm_runtime *rtd = substream->private_data; 576 577 return rtd->cpu_dai; 578 } 579 580 static 581 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 582 struct snd_pcm_substream *substream) 583 { 584 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 585 return &rdai->playback; 586 else 587 return &rdai->capture; 588 } 589 590 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 591 struct snd_soc_dai *dai) 592 { 593 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 594 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 595 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 596 int ret; 597 unsigned long flags; 598 599 spin_lock_irqsave(&priv->lock, flags); 600 601 switch (cmd) { 602 case SNDRV_PCM_TRIGGER_START: 603 case SNDRV_PCM_TRIGGER_RESUME: 604 rsnd_dai_stream_init(io, substream); 605 606 ret = rsnd_dai_call(init, io, priv); 607 if (ret < 0) 608 goto dai_trigger_end; 609 610 ret = rsnd_dai_call(start, io, priv); 611 if (ret < 0) 612 goto dai_trigger_end; 613 614 ret = rsnd_dai_call(irq, io, priv, 1); 615 if (ret < 0) 616 goto dai_trigger_end; 617 618 break; 619 case SNDRV_PCM_TRIGGER_STOP: 620 case SNDRV_PCM_TRIGGER_SUSPEND: 621 ret = rsnd_dai_call(irq, io, priv, 0); 622 623 ret |= rsnd_dai_call(stop, io, priv); 624 625 ret |= rsnd_dai_call(quit, io, priv); 626 627 rsnd_dai_stream_quit(io); 628 break; 629 default: 630 ret = -EINVAL; 631 } 632 633 dai_trigger_end: 634 spin_unlock_irqrestore(&priv->lock, flags); 635 636 return ret; 637 } 638 639 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 640 { 641 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 642 643 /* set master/slave audio interface */ 644 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 645 case SND_SOC_DAIFMT_CBM_CFM: 646 rdai->clk_master = 0; 647 break; 648 case SND_SOC_DAIFMT_CBS_CFS: 649 rdai->clk_master = 1; /* codec is slave, cpu is master */ 650 break; 651 default: 652 return -EINVAL; 653 } 654 655 /* set format */ 656 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 657 case SND_SOC_DAIFMT_I2S: 658 rdai->sys_delay = 0; 659 rdai->data_alignment = 0; 660 rdai->frm_clk_inv = 0; 661 break; 662 case SND_SOC_DAIFMT_LEFT_J: 663 rdai->sys_delay = 1; 664 rdai->data_alignment = 0; 665 rdai->frm_clk_inv = 1; 666 break; 667 case SND_SOC_DAIFMT_RIGHT_J: 668 rdai->sys_delay = 1; 669 rdai->data_alignment = 1; 670 rdai->frm_clk_inv = 1; 671 break; 672 } 673 674 /* set clock inversion */ 675 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 676 case SND_SOC_DAIFMT_NB_IF: 677 rdai->bit_clk_inv = rdai->bit_clk_inv; 678 rdai->frm_clk_inv = !rdai->frm_clk_inv; 679 break; 680 case SND_SOC_DAIFMT_IB_NF: 681 rdai->bit_clk_inv = !rdai->bit_clk_inv; 682 rdai->frm_clk_inv = rdai->frm_clk_inv; 683 break; 684 case SND_SOC_DAIFMT_IB_IF: 685 rdai->bit_clk_inv = !rdai->bit_clk_inv; 686 rdai->frm_clk_inv = !rdai->frm_clk_inv; 687 break; 688 case SND_SOC_DAIFMT_NB_NF: 689 default: 690 break; 691 } 692 693 return 0; 694 } 695 696 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, 697 u32 tx_mask, u32 rx_mask, 698 int slots, int slot_width) 699 { 700 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 701 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 702 struct device *dev = rsnd_priv_to_dev(priv); 703 704 switch (slots) { 705 case 6: 706 /* TDM Extend Mode */ 707 rsnd_set_slot(rdai, slots, 1); 708 break; 709 default: 710 dev_err(dev, "unsupported TDM slots (%d)\n", slots); 711 return -EINVAL; 712 } 713 714 return 0; 715 } 716 717 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream, 718 struct snd_soc_dai *dai) 719 { 720 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 721 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 722 723 /* 724 * call rsnd_dai_call without spinlock 725 */ 726 return rsnd_dai_call(nolock_start, io, priv); 727 } 728 729 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream, 730 struct snd_soc_dai *dai) 731 { 732 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 733 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 734 735 /* 736 * call rsnd_dai_call without spinlock 737 */ 738 rsnd_dai_call(nolock_stop, io, priv); 739 } 740 741 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 742 .startup = rsnd_soc_dai_startup, 743 .shutdown = rsnd_soc_dai_shutdown, 744 .trigger = rsnd_soc_dai_trigger, 745 .set_fmt = rsnd_soc_dai_set_fmt, 746 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, 747 }; 748 749 void rsnd_parse_connect_common(struct rsnd_dai *rdai, 750 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), 751 struct device_node *node, 752 struct device_node *playback, 753 struct device_node *capture) 754 { 755 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 756 struct device_node *np; 757 struct rsnd_mod *mod; 758 int i; 759 760 if (!node) 761 return; 762 763 i = 0; 764 for_each_child_of_node(node, np) { 765 mod = mod_get(priv, i); 766 if (np == playback) 767 rsnd_dai_connect(mod, &rdai->playback, mod->type); 768 if (np == capture) 769 rsnd_dai_connect(mod, &rdai->capture, mod->type); 770 i++; 771 } 772 773 of_node_put(node); 774 } 775 776 static int rsnd_dai_probe(struct rsnd_priv *priv) 777 { 778 struct device_node *dai_node; 779 struct device_node *dai_np; 780 struct device_node *playback, *capture; 781 struct rsnd_dai_stream *io_playback; 782 struct rsnd_dai_stream *io_capture; 783 struct snd_soc_dai_driver *rdrv, *drv; 784 struct rsnd_dai *rdai; 785 struct device *dev = rsnd_priv_to_dev(priv); 786 int nr, dai_i, io_i; 787 int ret; 788 789 dai_node = rsnd_dai_of_node(priv); 790 nr = of_get_child_count(dai_node); 791 if (!nr) { 792 ret = -EINVAL; 793 goto rsnd_dai_probe_done; 794 } 795 796 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL); 797 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL); 798 if (!rdrv || !rdai) { 799 ret = -ENOMEM; 800 goto rsnd_dai_probe_done; 801 } 802 803 priv->rdai_nr = nr; 804 priv->daidrv = rdrv; 805 priv->rdai = rdai; 806 807 /* 808 * parse all dai 809 */ 810 dai_i = 0; 811 for_each_child_of_node(dai_node, dai_np) { 812 rdai = rsnd_rdai_get(priv, dai_i); 813 drv = rdrv + dai_i; 814 io_playback = &rdai->playback; 815 io_capture = &rdai->capture; 816 817 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); 818 819 rdai->priv = priv; 820 drv->name = rdai->name; 821 drv->ops = &rsnd_soc_dai_ops; 822 823 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE, 824 "DAI%d Playback", dai_i); 825 drv->playback.rates = RSND_RATES; 826 drv->playback.formats = RSND_FMTS; 827 drv->playback.channels_min = 2; 828 drv->playback.channels_max = 6; 829 drv->playback.stream_name = rdai->playback.name; 830 831 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE, 832 "DAI%d Capture", dai_i); 833 drv->capture.rates = RSND_RATES; 834 drv->capture.formats = RSND_FMTS; 835 drv->capture.channels_min = 2; 836 drv->capture.channels_max = 6; 837 drv->capture.stream_name = rdai->capture.name; 838 839 rdai->playback.rdai = rdai; 840 rdai->capture.rdai = rdai; 841 rsnd_set_slot(rdai, 2, 1); /* default */ 842 843 for (io_i = 0;; io_i++) { 844 playback = of_parse_phandle(dai_np, "playback", io_i); 845 capture = of_parse_phandle(dai_np, "capture", io_i); 846 847 if (!playback && !capture) 848 break; 849 850 rsnd_parse_connect_ssi(rdai, playback, capture); 851 rsnd_parse_connect_src(rdai, playback, capture); 852 rsnd_parse_connect_ctu(rdai, playback, capture); 853 rsnd_parse_connect_mix(rdai, playback, capture); 854 rsnd_parse_connect_dvc(rdai, playback, capture); 855 856 of_node_put(playback); 857 of_node_put(capture); 858 } 859 860 dai_i++; 861 862 dev_dbg(dev, "%s (%s/%s)\n", rdai->name, 863 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", 864 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); 865 } 866 867 ret = 0; 868 869 rsnd_dai_probe_done: 870 of_node_put(dai_node); 871 872 return ret; 873 } 874 875 /* 876 * pcm ops 877 */ 878 static struct snd_pcm_hardware rsnd_pcm_hardware = { 879 .info = SNDRV_PCM_INFO_INTERLEAVED | 880 SNDRV_PCM_INFO_MMAP | 881 SNDRV_PCM_INFO_MMAP_VALID, 882 .buffer_bytes_max = 64 * 1024, 883 .period_bytes_min = 32, 884 .period_bytes_max = 8192, 885 .periods_min = 1, 886 .periods_max = 32, 887 .fifo_size = 256, 888 }; 889 890 static int rsnd_pcm_open(struct snd_pcm_substream *substream) 891 { 892 struct snd_pcm_runtime *runtime = substream->runtime; 893 int ret = 0; 894 895 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 896 897 ret = snd_pcm_hw_constraint_integer(runtime, 898 SNDRV_PCM_HW_PARAM_PERIODS); 899 900 return ret; 901 } 902 903 static int rsnd_hw_params(struct snd_pcm_substream *substream, 904 struct snd_pcm_hw_params *hw_params) 905 { 906 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 907 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 908 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 909 int ret; 910 911 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 912 if (ret) 913 return ret; 914 915 return snd_pcm_lib_malloc_pages(substream, 916 params_buffer_bytes(hw_params)); 917 } 918 919 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) 920 { 921 struct snd_pcm_runtime *runtime = substream->runtime; 922 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 923 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 924 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 925 926 return bytes_to_frames(runtime, io->byte_pos); 927 } 928 929 static struct snd_pcm_ops rsnd_pcm_ops = { 930 .open = rsnd_pcm_open, 931 .ioctl = snd_pcm_lib_ioctl, 932 .hw_params = rsnd_hw_params, 933 .hw_free = snd_pcm_lib_free_pages, 934 .pointer = rsnd_pointer, 935 }; 936 937 /* 938 * snd_kcontrol 939 */ 940 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value) 941 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 942 struct snd_ctl_elem_info *uinfo) 943 { 944 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 945 946 if (cfg->texts) { 947 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 948 uinfo->count = cfg->size; 949 uinfo->value.enumerated.items = cfg->max; 950 if (uinfo->value.enumerated.item >= cfg->max) 951 uinfo->value.enumerated.item = cfg->max - 1; 952 strlcpy(uinfo->value.enumerated.name, 953 cfg->texts[uinfo->value.enumerated.item], 954 sizeof(uinfo->value.enumerated.name)); 955 } else { 956 uinfo->count = cfg->size; 957 uinfo->value.integer.min = 0; 958 uinfo->value.integer.max = cfg->max; 959 uinfo->type = (cfg->max == 1) ? 960 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 961 SNDRV_CTL_ELEM_TYPE_INTEGER; 962 } 963 964 return 0; 965 } 966 967 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 968 struct snd_ctl_elem_value *uc) 969 { 970 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 971 int i; 972 973 for (i = 0; i < cfg->size; i++) 974 if (cfg->texts) 975 uc->value.enumerated.item[i] = cfg->val[i]; 976 else 977 uc->value.integer.value[i] = cfg->val[i]; 978 979 return 0; 980 } 981 982 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 983 struct snd_ctl_elem_value *uc) 984 { 985 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl); 986 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 987 int i, change = 0; 988 989 for (i = 0; i < cfg->size; i++) { 990 if (cfg->texts) { 991 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 992 cfg->val[i] = uc->value.enumerated.item[i]; 993 } else { 994 change |= (uc->value.integer.value[i] != cfg->val[i]); 995 cfg->val[i] = uc->value.integer.value[i]; 996 } 997 } 998 999 if (change && cfg->update) 1000 cfg->update(cfg->io, mod); 1001 1002 return change; 1003 } 1004 1005 static int __rsnd_kctrl_new(struct rsnd_mod *mod, 1006 struct rsnd_dai_stream *io, 1007 struct snd_soc_pcm_runtime *rtd, 1008 const unsigned char *name, 1009 struct rsnd_kctrl_cfg *cfg, 1010 void (*update)(struct rsnd_dai_stream *io, 1011 struct rsnd_mod *mod)) 1012 { 1013 struct snd_card *card = rtd->card->snd_card; 1014 struct snd_kcontrol *kctrl; 1015 struct snd_kcontrol_new knew = { 1016 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1017 .name = name, 1018 .info = rsnd_kctrl_info, 1019 .index = rtd->num, 1020 .get = rsnd_kctrl_get, 1021 .put = rsnd_kctrl_put, 1022 .private_value = (unsigned long)cfg, 1023 }; 1024 int ret; 1025 1026 kctrl = snd_ctl_new1(&knew, mod); 1027 if (!kctrl) 1028 return -ENOMEM; 1029 1030 ret = snd_ctl_add(card, kctrl); 1031 if (ret < 0) 1032 return ret; 1033 1034 cfg->update = update; 1035 cfg->card = card; 1036 cfg->kctrl = kctrl; 1037 cfg->io = io; 1038 1039 return 0; 1040 } 1041 1042 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg) 1043 { 1044 if (cfg->card && cfg->kctrl) 1045 snd_ctl_remove(cfg->card, cfg->kctrl); 1046 1047 cfg->card = NULL; 1048 cfg->kctrl = NULL; 1049 } 1050 1051 int rsnd_kctrl_new_m(struct rsnd_mod *mod, 1052 struct rsnd_dai_stream *io, 1053 struct snd_soc_pcm_runtime *rtd, 1054 const unsigned char *name, 1055 void (*update)(struct rsnd_dai_stream *io, 1056 struct rsnd_mod *mod), 1057 struct rsnd_kctrl_cfg_m *_cfg, 1058 int ch_size, 1059 u32 max) 1060 { 1061 if (ch_size > RSND_MAX_CHANNELS) 1062 return -EINVAL; 1063 1064 _cfg->cfg.max = max; 1065 _cfg->cfg.size = ch_size; 1066 _cfg->cfg.val = _cfg->val; 1067 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1068 } 1069 1070 int rsnd_kctrl_new_s(struct rsnd_mod *mod, 1071 struct rsnd_dai_stream *io, 1072 struct snd_soc_pcm_runtime *rtd, 1073 const unsigned char *name, 1074 void (*update)(struct rsnd_dai_stream *io, 1075 struct rsnd_mod *mod), 1076 struct rsnd_kctrl_cfg_s *_cfg, 1077 u32 max) 1078 { 1079 _cfg->cfg.max = max; 1080 _cfg->cfg.size = 1; 1081 _cfg->cfg.val = &_cfg->val; 1082 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1083 } 1084 1085 int rsnd_kctrl_new_e(struct rsnd_mod *mod, 1086 struct rsnd_dai_stream *io, 1087 struct snd_soc_pcm_runtime *rtd, 1088 const unsigned char *name, 1089 struct rsnd_kctrl_cfg_s *_cfg, 1090 void (*update)(struct rsnd_dai_stream *io, 1091 struct rsnd_mod *mod), 1092 const char * const *texts, 1093 u32 max) 1094 { 1095 _cfg->cfg.max = max; 1096 _cfg->cfg.size = 1; 1097 _cfg->cfg.val = &_cfg->val; 1098 _cfg->cfg.texts = texts; 1099 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1100 } 1101 1102 /* 1103 * snd_soc_platform 1104 */ 1105 1106 #define PREALLOC_BUFFER (32 * 1024) 1107 #define PREALLOC_BUFFER_MAX (32 * 1024) 1108 1109 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) 1110 { 1111 struct snd_soc_dai *dai = rtd->cpu_dai; 1112 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1113 int ret; 1114 1115 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1116 if (ret) 1117 return ret; 1118 1119 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1120 if (ret) 1121 return ret; 1122 1123 return snd_pcm_lib_preallocate_pages_for_all( 1124 rtd->pcm, 1125 SNDRV_DMA_TYPE_CONTINUOUS, 1126 snd_dma_continuous_data(GFP_KERNEL), 1127 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1128 } 1129 1130 static struct snd_soc_platform_driver rsnd_soc_platform = { 1131 .ops = &rsnd_pcm_ops, 1132 .pcm_new = rsnd_pcm_new, 1133 }; 1134 1135 static const struct snd_soc_component_driver rsnd_soc_component = { 1136 .name = "rsnd", 1137 }; 1138 1139 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1140 struct rsnd_dai_stream *io) 1141 { 1142 int ret; 1143 1144 ret = rsnd_dai_call(probe, io, priv); 1145 if (ret == -EAGAIN) { 1146 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); 1147 struct rsnd_mod *mod; 1148 int i; 1149 1150 /* 1151 * Fallback to PIO mode 1152 */ 1153 1154 /* 1155 * call "remove" for SSI/SRC/DVC 1156 * SSI will be switch to PIO mode if it was DMA mode 1157 * see 1158 * rsnd_dma_init() 1159 * rsnd_ssi_fallback() 1160 */ 1161 rsnd_dai_call(remove, io, priv); 1162 1163 /* 1164 * remove all mod from io 1165 * and, re connect ssi 1166 */ 1167 for_each_rsnd_mod(i, mod, io) 1168 rsnd_dai_disconnect(mod, io, i); 1169 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); 1170 1171 /* 1172 * fallback 1173 */ 1174 rsnd_dai_call(fallback, io, priv); 1175 1176 /* 1177 * retry to "probe". 1178 * DAI has SSI which is PIO mode only now. 1179 */ 1180 ret = rsnd_dai_call(probe, io, priv); 1181 } 1182 1183 return ret; 1184 } 1185 1186 /* 1187 * rsnd probe 1188 */ 1189 static int rsnd_probe(struct platform_device *pdev) 1190 { 1191 struct rsnd_priv *priv; 1192 struct device *dev = &pdev->dev; 1193 struct rsnd_dai *rdai; 1194 int (*probe_func[])(struct rsnd_priv *priv) = { 1195 rsnd_gen_probe, 1196 rsnd_dma_probe, 1197 rsnd_ssi_probe, 1198 rsnd_ssiu_probe, 1199 rsnd_src_probe, 1200 rsnd_ctu_probe, 1201 rsnd_mix_probe, 1202 rsnd_dvc_probe, 1203 rsnd_cmd_probe, 1204 rsnd_adg_probe, 1205 rsnd_dai_probe, 1206 }; 1207 int ret, i; 1208 1209 /* 1210 * init priv data 1211 */ 1212 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1213 if (!priv) { 1214 dev_err(dev, "priv allocate failed\n"); 1215 return -ENODEV; 1216 } 1217 1218 priv->pdev = pdev; 1219 priv->flags = (unsigned long)of_device_get_match_data(dev); 1220 spin_lock_init(&priv->lock); 1221 1222 /* 1223 * init each module 1224 */ 1225 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1226 ret = probe_func[i](priv); 1227 if (ret) 1228 return ret; 1229 } 1230 1231 for_each_rsnd_dai(rdai, priv, i) { 1232 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1233 if (ret) 1234 goto exit_snd_probe; 1235 1236 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1237 if (ret) 1238 goto exit_snd_probe; 1239 } 1240 1241 dev_set_drvdata(dev, priv); 1242 1243 /* 1244 * asoc register 1245 */ 1246 ret = snd_soc_register_platform(dev, &rsnd_soc_platform); 1247 if (ret < 0) { 1248 dev_err(dev, "cannot snd soc register\n"); 1249 return ret; 1250 } 1251 1252 ret = snd_soc_register_component(dev, &rsnd_soc_component, 1253 priv->daidrv, rsnd_rdai_nr(priv)); 1254 if (ret < 0) { 1255 dev_err(dev, "cannot snd dai register\n"); 1256 goto exit_snd_soc; 1257 } 1258 1259 pm_runtime_enable(dev); 1260 1261 dev_info(dev, "probed\n"); 1262 return ret; 1263 1264 exit_snd_soc: 1265 snd_soc_unregister_platform(dev); 1266 exit_snd_probe: 1267 for_each_rsnd_dai(rdai, priv, i) { 1268 rsnd_dai_call(remove, &rdai->playback, priv); 1269 rsnd_dai_call(remove, &rdai->capture, priv); 1270 } 1271 1272 return ret; 1273 } 1274 1275 static int rsnd_remove(struct platform_device *pdev) 1276 { 1277 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 1278 struct rsnd_dai *rdai; 1279 void (*remove_func[])(struct rsnd_priv *priv) = { 1280 rsnd_ssi_remove, 1281 rsnd_ssiu_remove, 1282 rsnd_src_remove, 1283 rsnd_ctu_remove, 1284 rsnd_mix_remove, 1285 rsnd_dvc_remove, 1286 rsnd_cmd_remove, 1287 rsnd_adg_remove, 1288 }; 1289 int ret = 0, i; 1290 1291 pm_runtime_disable(&pdev->dev); 1292 1293 for_each_rsnd_dai(rdai, priv, i) { 1294 ret |= rsnd_dai_call(remove, &rdai->playback, priv); 1295 ret |= rsnd_dai_call(remove, &rdai->capture, priv); 1296 } 1297 1298 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 1299 remove_func[i](priv); 1300 1301 snd_soc_unregister_component(&pdev->dev); 1302 snd_soc_unregister_platform(&pdev->dev); 1303 1304 return ret; 1305 } 1306 1307 static int rsnd_suspend(struct device *dev) 1308 { 1309 struct rsnd_priv *priv = dev_get_drvdata(dev); 1310 1311 rsnd_adg_clk_disable(priv); 1312 1313 return 0; 1314 } 1315 1316 static int rsnd_resume(struct device *dev) 1317 { 1318 struct rsnd_priv *priv = dev_get_drvdata(dev); 1319 1320 rsnd_adg_clk_enable(priv); 1321 1322 return 0; 1323 } 1324 1325 static struct dev_pm_ops rsnd_pm_ops = { 1326 .suspend = rsnd_suspend, 1327 .resume = rsnd_resume, 1328 }; 1329 1330 static struct platform_driver rsnd_driver = { 1331 .driver = { 1332 .name = "rcar_sound", 1333 .pm = &rsnd_pm_ops, 1334 .of_match_table = rsnd_of_match, 1335 }, 1336 .probe = rsnd_probe, 1337 .remove = rsnd_remove, 1338 }; 1339 module_platform_driver(rsnd_driver); 1340 1341 MODULE_LICENSE("GPL"); 1342 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 1343 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1344 MODULE_ALIAS("platform:rcar-pcm-audio"); 1345